@mixin btn_header(){
        float: right;
        width: 33px;
        height: 100%;
        display: inline-block;
        vertical-align: top;
        // border: 1px solid yellow;
        margin-left: 35px;
        margin-right: 15px;
}
@mixin btn_button($background-position:-167px -161px){
    background: none repeat scroll 0 0 transparent;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    zoom: 1;
    font-size: 12px;
    // height: 100%;
    line-height: inherit;
    position: relative;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: visible;
    background-image: url(https://image.converse.com.cn/images/commons/sprites_header_footer.png);
    background-color: transparent;
    background-repeat: no-repeat;
    color: white;
    height: 30px;
    margin-top: -15px;
    position: absolute;
    text-align: center;
    top: 50%;
    width: 30px;
    line-height: 30px;
    content: "";
    left: auto;
    background-position: $background-position;
}
